Ed Stanley drives the golden rivet to mark the completion of the $35,000,000 Golden Gate Bridge spanning the entrance to San Francisco Bay, Ca., April 29, 1937. Holding the rivet is Ed Murphy and leaning over them is Joseph B. Strauss, chief engineer of the project. less

Ed Stanley drives the golden rivet to mark the completion of the $35,000,000 Golden Gate Bridge spanning the entrance to San Francisco Bay, Ca., April 29, 1937. Holding the rivet is Ed Murphy and leaning over ... more

Auto parade on the opening day of the Golden Gate Bridge, heading southbound.

Auto parade on the opening day of the Golden Gate Bridge, heading southbound.

Photo: San Francisco Chronicle

Auto parade on the opening day of the Golden Gate Bridge, heading... Photo-2957822.33388 - SFGate

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May 27, 1937: San Rafael High students run through the early morning fog -- among the first pedestrians on the newly completed Golden Gate Bridge. (Chronicle file)

May 27, 1937: San Rafael High students run through the early morning fog -- among the first pedestrians on the newly completed Golden Gate Bridge. (Chronicle file)

May 27, 1937: San Rafael High students run through the early... Photo-2751401.33388 - SFGate

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Aerial photo of Golden Gate Bridge with fog in Marin taken on an unknown date. The Chronicle library envelope says it was shot on opening day, but there is no foot traffic and minimal vehicle traffic on the bridge. less

Aerial photo of Golden Gate Bridge with fog in Marin taken on an unknown date. The Chronicle library envelope says it was shot on opening day, but there is no foot traffic and minimal vehicle traffic on the ... more

Photo: San Francisco Chronicle

Aerial photo of Golden Gate Bridge with fog in Marin taken on an... Photo-3044167.33388 - SFGate

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Portrait of the Golden Gate Bridge "Halfway to Hell Club," a group of men who had fallen off the bridge but were saved by the safety nets.

Portrait of the Golden Gate Bridge "Halfway to Hell Club," a group of men who had fallen off the bridge but were saved by the safety nets.

March 21, 1956 - Speeches and band music were the order of the day inside the old Waldo Tunnel, but outside, cannon boomed, jet fighters swooped and an Army M-47 tank roared around. It was all part of the ceremony opening the new tunnel, which doubles Marin approaches to the Golden Gate Bridge. less

March 21, 1956 - Speeches and band music were the order of the day inside the old Waldo Tunnel, but outside, cannon boomed, jet fighters swooped and an Army M-47 tank roared around. It was all part of the ... more

Photo: Duke Downey, The Chronicle

March 21, 1956 - Speeches and band music were the order of the day... Photo-1887422.33388 - SFGate

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Members of San Francisco Ballet pose beneath the Golden Gate Bridge on the eve of the first Far East Tour (1957).

Members of San Francisco Ballet pose beneath the Golden Gate Bridge on the eve of the first Far East Tour (1957).

July 1, 1991 - Back when $3 was needed to cross the Golden Gate Bridge.

July 1, 1991 - Back when $3 was needed to cross the Golden Gate Bridge.

Photo: Scott Sommerdorf, The Chronicle

July 1, 1991 - Back when $3 was needed to cross the Golden Gate... Photo-1887432.33388 - SFGate

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Feb 25, 1992 - The views were terrific as a tourboat did a U-turn just outside the Golden Gate Bridge. Both tourists and commuters alike were treated to spring-like weather even as the sun set in the west.

Feb 25, 1992 - The views were terrific as a tourboat did a U-turn just outside the Golden Gate Bridge. Both tourists and commuters alike were treated to spring-like weather even as the sun set in the west.

Photo: Brant Ward, The Chronicle

Feb 25, 1992 - The views were terrific as a tourboat did a U-turn... Photo-1887436.33388 - SFGate

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June 4, 1993 - Boats gathered at the Golden Gate Bridge to protest the shutdown of the salmon fishing.

June 4, 1993 - Boats gathered at the Golden Gate Bridge to protest the shutdown of the salmon fishing.

Fireworks over the Golden Gate Bridge, looking back from the Marin Headlands, on July 4th, 2006.

Fireworks over the Golden Gate Bridge, looking back from the Marin Headlands, on July 4th, 2006.

Photo: Liz Mangelsdorf, The Chronicle

Fireworks over the Golden Gate Bridge, looking back from the Marin... Photo-3097822.33388 - SFGate

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The evening fog curled up in a ball like cotton candy as a near full moon cast a broad beam of light that spread over The Golden Gate Bridge .May 7, 2009.

The evening fog curled up in a ball like cotton candy as a near full moon cast a broad beam of light that spread over The Golden Gate Bridge .May 7, 2009.

Photo: Frederic Larson, The Chronicle

The evening fog curled up in a ball like cotton candy as a near... Photo-3097825.33388 - SFGate

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Bicycle riders takes the West side sidewalk across the bridge.

Bicycle riders takes the West side sidewalk across the bridge.

Photo: Michael Macor, The Chronicle

Bicycle riders takes the West side sidewalk across the bridge. Photo-3097827.33388 - SFGate

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The full moon set seemingly on the deck of the Golden Gate Bridge during Wednesday commute hour (6:35am) seen from Treasure Island on September 26, 2007.

The full moon set seemingly on the deck of the Golden Gate Bridge during Wednesday commute hour (6:35am) seen from Treasure Island on September 26, 2007.

Photo: Frederic Larson, The Chronicle

The full moon set seemingly on the deck of the Golden Gate Bridge... Photo-3097828.33388 - SFGate

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The comet Hale-Bopp is seen low on the horizon Wednesday evening, March 26, 1997 looking northwest over San Francisco's Golden Gate bridge. This photo was made with a 300mm lens exposed with a lens opening of F2.8 for 15 seconds on 800 ASA film pushed one stop. less

The comet Hale-Bopp is seen low on the horizon Wednesday evening, March 26, 1997 looking northwest over San Francisco's Golden Gate bridge. This photo was made with a 300mm lens exposed with a lens opening of ... more

Photo: Frederic Larson, The Chronicle

The comet Hale-Bopp is seen low on the horizon Wednesday evening,... Photo-3097830.33388 - SFGate

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Fog engulfed the bay where only sites of the Golden Gate bridge can be seen at the highest points of Marin Headlands.

Fog engulfed the bay where only sites of the Golden Gate bridge can be seen at the highest points of Marin Headlands.

Photo: Frederic Larson, The Chronicle

Fog engulfed the bay where only sites of the Golden Gate bridge can... Photo-3097831.33388 - SFGate

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The Golden Gate Bridge south tower framed the morning crescent shaped moon perfectly as viewed from the Marin headlands of Sausalito. 4/5/05

The Golden Gate Bridge south tower framed the morning crescent shaped moon perfectly as viewed from the Marin headlands of Sausalito. 4/5/05

The morning rains stirred up the ocean at Bakers Beach as heavy dark rain clouds moved in over the hills of Marin and the Golden Gate Bridge. 4/7/05

The morning rains stirred up the ocean at Bakers Beach as heavy dark rain clouds moved in over the hills of Marin and the Golden Gate Bridge. 4/7/05

Photo: Frederic Larson, The Chronicle

The morning rains stirred up the ocean at Bakers Beach as heavy... Photo-3097834.33388 - SFGate

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The morning commute over the Golden Gate bridge was lit with north and south bound traffic. 4/7/05

The morning commute over the Golden Gate bridge was lit with north and south bound traffic. 4/7/05

Photo: Frederic Larson, The Chronicle

The morning commute over the Golden Gate bridge was lit with north... Photo-3097835.33388 - SFGate

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The sun casts a late afternoon shadow of the Golden Gate Bridge south tower on the bay. 4/26/05

The sun casts a late afternoon shadow of the Golden Gate Bridge south tower on the bay. 4/26/05

Photo: Frederic Larson, The Chronicle

The sun casts a late afternoon shadow of the Golden Gate Bridge... Photo-3097836.33388 - SFGate

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A high pressure system developing off the coast creates a golden sunrise at the bridge.

A high pressure system developing off the coast creates a golden sunrise at the bridge.

Photo: Frederic Larson, The Chronicle

A high pressure system developing off the coast creates a golden... Photo-3097838.33388 - SFGate

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Early morning fog whips the top of the north tower of the Golden Gate Bridge on May 8, 2012 in San Francisco, Calif.

Early morning fog whips the top of the north tower of the Golden Gate Bridge on May 8, 2012 in San Francisco, Calif.

Photo: Mike Kepka, The Chronicle

Early morning fog whips the top of the north tower of the Golden... Photo-2957809.33388 - SFGate

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The September low hugging fog slowly makes its way under the Golden Gate Bridge seen at Fort Baker during sunrise.

The September low hugging fog slowly makes its way under the Golden Gate Bridge seen at Fort Baker during sunrise.

Photo: Frederic Larson, The Chronicle

The September low hugging fog slowly makes its way under the Golden... Photo-3097840.33388 - SFGate

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The sun rises over the Golden Gate Bridge seen from the Marin Headlands.

The sun rises over the Golden Gate Bridge seen from the Marin Headlands.

Photo: Frederic Larson, SFC

The sun rises over the Golden Gate Bridge seen from the Marin... Photo-3097846.33388 - SFGate

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Seen from the Marin headlands rising over the north tower of the Golden Gate Bridge was both the crescent moon and the planet Venus pairing up within minutes of each other during the morning twilight on March 5, 2008. less

Seen from the Marin headlands rising over the north tower of the Golden Gate Bridge was both the crescent moon and the planet Venus pairing up within minutes of each other during the morning twilight on March ... more

Photo: Frederic Larson, The Chronicle

Seen from the Marin headlands rising over the north tower of the... Photo-3097847.33388 - SFGate

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Just the tops of the tallest building of the San Francisco skyline was visual just before sunrise as viewed from the Marin headlands looking through the Golden Gate Bridge.

Just the tops of the tallest building of the San Francisco skyline was visual just before sunrise as viewed from the Marin headlands looking through the Golden Gate Bridge.

Photo: Frederic Larson, The Chronicle

Just the tops of the tallest building of the San Francisco skyline... Photo-3097849.33388 - SFGate